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Guide for Interworking Between HUAWEI CloudFabric Solution and Redhat OpenStack

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Huawei uses machine translation combined with human proofreading to translate this document to different languages in order to help you better understand the content of this document. Note: Even the most advanced machine translation cannot match the quality of professional translators. Huawei shall not bear any responsibility for translation accuracy and it is recommended that you refer to the English document (a link for which has been provided).
Red Hat OpenStack Undercloud

Red Hat OpenStack Undercloud

The Undercloud is the main director node. It is a single-system OpenStack installation that includes components for provisioning and managing the OpenStack nodes that form your OpenStack environment (the Overcloud). The Undercloud components provide the following functions:

  • Environment planning: The Undercloud provides planning functions for users to assign Red Hat Enterprise Linux OpenStack Platform roles, including Compute, Controller, and various storage roles.
  • Bare metal system control: The Undercloud uses the Intelligent Platform Management Interface (IPMI) of each node for power management control and a PXE-based service to discover hardware attributes and install OpenStack to each node. This provides a method to provision bare metal systems as OpenStack nodes.
  • Orchestration: The Undercloud provides and reads a set of YAML templates to create an OpenStack environment.

The Red Hat Enterprise Linux OpenStack Platform director utilizes these Undercloud functions through a terminal-based command line interface (CLI). The Undercloud includes the following components:

  • OpenStack Bare Metal (Ironic) and OpenStack Compute (Nova): manage bare metal nodes.
  • OpenStack Networking (Neutron) and Open vSwitch: control networking for bare metal nodes.
  • OpenStack Image Server (Glance): stores images that are written to bare metal machines.
  • OpenStack Orchestration (Heat) and Puppet: provides orchestration of nodes and configuration of nodes after the director writes the Overcloud image to a disk.
  • OpenStack Telemetry (Ceilometer): monitors and collects data.
  • OpenStack Telemetry Metrics (Gnocchi): provides a time sequence database for metrics.
  • OpenStack Telemetry Alarming (Aodh): reports alarms based on monitoring.
  • OpenStack Identity (Keystone): authenticates and authorizes the director's components.
  • MariaDB: functions as the database for the director.
  • RabbitMQ: functions as a messaging queue for the director's components.
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Updated: 2019-03-25

Document ID: EDOC1100072313

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